BMC Musculoskeletal Disorders | |
Altered muscle recruitment patterns during isometric shoulder abduction in individuals with chronic upper trapezius pain: a cross sectional study | |
Research | |
Oh-Yun Kwon1  Jong-Hyuck Weon2  Woochol Joseph Choi3  Hye-Seon Jeon3  Chung-Hwi Yi3  Hyun-A Kim4  | |
[1] Department of Physical Therapy, College of Health Science, Laboratory of Kinetic Ergocise Based on Movement Analysis, Yonsei University, 1 Yonseidae-gil, 26493, Wonju, Gangwon-Do, South Korea;Department of Physical Therapy, Joongbu University, 201 Daehak-ro, Chubu-myeon, Geumsan-gun, Chungcheongnam-do, South Korea;Department of Physical Therapy, Yonsei University, 1 Yonseidae-gil, 26493, Wonju, Gangwon-Do, South Korea;Department of Physical therapy, Nagoya University, 1-1-20 Daiko-Minami, Higashi-ku, Nagoya City, Aichi Prefecture, Japan; | |
关键词: Myofascial trigger point; Upper trapezius pain; Shoulder abduction; Altered recruitment pattern; Low load; | |
DOI : 10.1186/s12891-022-06030-0 | |
received in 2022-05-17, accepted in 2022-11-25, 发布年份 2022 | |
来源: Springer | |
【 摘 要 】
BackgroundUpper trapezius (UT) pain with myofascial trigger points (MTrPs) can affect movement at the glenohumeral joint as well as at the scapulothoracic joint. The investigation of muscle recruitment patterns can discern motor control strategies. The purpose of this study was to compare shoulder muscle recruitment patterns and muscle activity according to various loads between individuals with and without chronic UT pain.MethodsIn this cross-sectional study, twenty-four participants that had UT pain with MTrPs and sex, age, body weight matched 24 controls with no UT pain were recruited. Surface EMG electrodes were attached to the UT, the serratus anterior (SA), the lower trapezius (LT) and the middle deltoid (MD). All participants performed isometric shoulder abduction with a load of 25%, 50%, or 75% of the maximum strength at 60° of shoulder abduction. The EMG activity, the activity ratio (SA/UT, LT/UT, MD/UT), and the relative contribution of each muscle activity were calculated.ResultsMD activity was significantly decreased in the UT pain group compared to that in the control group (p < 0.05). The EMG activity ratio of SA/UT (p < 0.025) and the relative contribution of SA activity to shoulder abduction (p < 0.05) were significantly greater in the UT pain group than in the control group in the 25% loading condition.ConclusionThe results of present study showed that UT pain with MTrPs may increase the relative contribution of SA activity and decrease MD activity at low loads. Altered recruitment patterns of scapular upward rotators can be altered in the proper scapular position, which results in decreased MD activity. Clinicians should consider altered recruitment patterns when managing UT pain.Trial registrationClinical Research Information Service: Clinical Research Information Service (KCT0007370; 08/06/2022).
【 授权许可】
CC BY
© The Author(s) 2022
【 预 览 】
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RO202305066610630ZK.pdf | 1085KB | download | |
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12864_2022_9026_Article_IEq248.gif | 1KB | Image | download |
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